<?php

namespace App\GraphQL\Mutations\DeviceOrder;

use App\Models\DeviceOrder;
use GraphQL\Type\Definition\ResolveInfo;
use Nuwave\Lighthouse\Support\Contracts\GraphQLContext;
use Illuminate\Support\Carbon;
class Cancle
{
    /**
     * Return a value for the field.
     *
     * @param  null  $rootValue Usually contains the result returned from the parent field. In this case, it is always `null`.
     * @param  mixed[]  $args The arguments that were passed into the field.
     * @param  \Nuwave\Lighthouse\Support\Contracts\GraphQLContext  $context Arbitrary data that is shared between all fields of a single query.
     * @param  \GraphQL\Type\Definition\ResolveInfo  $resolveInfo Information about the query itself, such as the execution state, the field name, path to the field from the root, and more.
     * @return mixed
     */
    public function __invoke($rootValue, array $args, GraphQLContext $context, ResolveInfo $resolveInfo)
    {
        
        $id = $args['id'];
        $deviceOrder = $this->validate($id);
        $deviceOrder->status = 'CANCEL';
        $deviceOrder->cancle_time = Carbon::now();
        $deviceOrder->save();
        return [
            'status'=> '200',
            'message'=>'取消成功'
        ];
    }
    public function validate($id){
        $old = DeviceOrder::find($id);
        if (!$old){
            throw new \Exception('订单不存在!');
        }
        if ($old->status === 'CANCEL'){
            throw new \Exception('订单已经取消,无法取消!');
        }
        if ($old->status !== 'WAIT_PAY'){
            throw new \Exception('订单已经支付,无法取消!');
        }
        return $old;
    }
}
